\cleardoublepage
\chapter{外文原文}

% Insert pdf version of original document
% Place the pdf under `/figure/`

\begin{center}
    \includepdf[
        pages=1-3,
        scale=0.75,
        pagecommand={\pagestyle{fancy}},
        frame, % remove this line if you don't want outer fram of pdf
    ]{rules2018.pdf}
\end{center}
